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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 193 · 40 sums
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The method (Know the totals): Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°. On a straight line: the two angles add up to 180°. In a triangle: the three angles add up to 180°. Around a point: 360°. Clock: each hour mark is 30° apart (360° ÷ 12).

NameDateTime takenScore ___ / 40
  1. 1.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  5. 5.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  10. 10.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  11. 11.Two angles of a triangle are 20° and 65°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  17. 17.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 35° and 35°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 70° and 65°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  24. 24.An angle measures 135°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  25. 25.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 65° and 85°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 130° and 140°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 25° and 125°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 80° and 140°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?

Answer key

  1. 80
  2. 85
  3. 210
  4. Right
  5. 65
  6. 130
  7. 90
  8. 105
  9. 65
  10. Straight
  11. 95
  12. 200
  13. 75
  14. 120
  15. 135
  16. 30
  17. 30
  18. 15
  19. 160
  20. 110
  21. 165
  22. 45
  23. 180
  24. Obtuse
  25. 25
  26. 30
  27. 100
  28. 45
  29. 90
  30. 110
  31. 5
  32. 30
  33. 40
  34. 30
  35. 190
  36. 140
  37. 70
  38. 85
  39. 50
  40. 90

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